Net Loss Per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Basic income per share
Net income	$ 748,254	$ 1,691,307	$ 2,317,107	$ 2,020,455
Weighted average shares outstanding (in shares)	5,054,148	4,924,366	5,036,102	4,924,366
Basic income (loss) per share (in dollars per share)			$ 0.46	$ 0.41
Diluted income per share
Dilutive effect of stock options (in shares)	45,239	40,599	39,097	34,107
Total weighted average shares outstanding (in shares)	5,099,387	4,964,965	5,075,199	4,958,473
Diluted income (loss) per share (in dollars per share)	$ 0.15	$ 0.34		$ 0.46	$ 0.41